written and mental arithmetic technique for sums

http://www.inrp.fr/publications/edition-electronique/cerme6/...
techniques like recalling a repertoire or “calcul réfléchi” or necessitates to use fingers or written techniques if Vwrit=yes
http://michel.delord.free.fr/grip-banff-eng.pdf
This fundamental point, which partially justifies the success of homeschooling will not be
developed here at length: without mentioning the afflux of patients to orthophonic clinics
v i i i
as a
result of modern reading instruction, one could briefly touch on the example of mental arithmetic
which would be better not taught at all than taught the way it is. In fact, ever since it has been
taught as “calcul réfléchi”, which mixes written and mental arithmetic, actually teaching mental arithmetic means investing a lot of time to unlearn reflexes formerly taught.

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Note added at 3 hrs (2011-05-24 18:22:32 GMT)
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http://www.wix.wandsworth.sch.uk/documents/curriculumBil_06v...